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// Copyright (C) 2015-2024 Internet Systems Consortium, Inc. ("ISC")
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
#include <config.h>
#include <util/chrono_time_utils.h>
#include <sstream>
#include <iomanip>
using namespace std::chrono;
namespace isc {
namespace util {
std::string
clockToText(std::chrono::system_clock::time_point t, size_t fsecs_precision) {
time_t tt = system_clock::to_time_t(t);
struct tm tm;
localtime_r(&tt, &tm);
std::stringstream s;
s << (tm.tm_year + 1900)
<< "-" << std::setw(2) << std::setfill('0') << (tm.tm_mon + 1)
<< "-" << std::setw(2) << std::setfill('0') << tm.tm_mday
<< " " << std::setw(2) << std::setfill('0') << tm.tm_hour
<< ":" << std::setw(2) << std::setfill('0') << tm.tm_min
<< ":" << std::setw(2) << std::setfill('0') << tm.tm_sec;
// If the requested precision is less than the maximum native precision
// we will divide the fractional seconds value by 10^(max - requested)
if (fsecs_precision) {
system_clock::duration dur = t - system_clock::from_time_t(tt);
microseconds frac = duration_cast<microseconds>(dur);
auto fsecs = frac.count();
size_t width = MAX_FSECS_PRECISION;
if (fsecs_precision < width) {
for (size_t i = 0; i < width - fsecs_precision; ++i) {
fsecs /= 10;
}
width = fsecs_precision;
}
s << "." << std::setw(width)
<< std::setfill('0')
<< fsecs;
}
return (s.str());
}
template<typename Duration> std::string
durationToText(Duration dur, size_t fsecs_precision) {
seconds unfrac = duration_cast<seconds>(dur);
auto secs = unfrac.count();
std::stringstream s;
auto hours = secs / 3600;
secs -= hours * 3600;
s << std::setw(2) << std::setfill('0') << hours;
auto mins = secs / 60;
secs -= mins * 60;
s << ":" << std::setw(2) << std::setfill('0') << mins
<< ":" << std::setw(2) << std::setfill('0') << secs;
// If the requested precision is less than the maximum native precision
// we will divide the fractional seconds value by 10^(max - requested)
if (fsecs_precision) {
microseconds frac = duration_cast<microseconds>(dur);
frac -= duration_cast<microseconds>(unfrac);
auto fsecs = frac.count();
size_t width = MAX_FSECS_PRECISION;
if (fsecs_precision < width) {
for (size_t i = 0; i < width - fsecs_precision; ++i) {
fsecs /= 10;
}
width = fsecs_precision;
}
s << "." << std::setw(width)
<< std::setfill('0')
<< fsecs;
}
return (s.str());
}
// Instantiate for standard clocks.
template std::string
durationToText<system_clock::duration>(system_clock::duration dur,
size_t fsecs_precision);
#if !CHRONO_SAME_DURATION
template std::string
durationToText<steady_clock::duration>(steady_clock::duration dur,
size_t fsecs_precision);
#endif
} // end of isc::util namespace
} // end of isc namespace
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